相对平均值计算公式

简介：Anya's pretty face changed slightly after hearing this, and she subconsciously opened her mouth to object, but she didn't know how to speak, so she could only watch Xiao Xiaobai and An Xin get up and enter An Xin's room. Anya, who had just reacted, wanted to follow her, but saw that the door to An Xin's room had been closed, and she couldn't knock on it anymore.